"60 Minutes" does 90+ on May 4

In a study of 90+ year olds! it was found that 15 minutes of exercise enhanced longevity. 45 minutes was optimum.

Vitamins, including A,C and E, gave no benefit.

Moderate alcohol and coffee did enhance longevity.

As to weight, maintain or increase. It's not good to skinny when you are old.

As to the future, the number of 90+ will quadruple by mid-century.

As to dementia, the risk after age 65 doubles every five years.

But the correlation of plaque and dementia was questioned.